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Finding the Fourth Proportional to 832.79, 1,149.17 and 459.79

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Solution

The fourth proportional to 832.79, 1,149.17 and 459.79 is: 634.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    832.79 : 1,149.17 = 459.79 : x
  2. Step 2: Convert to fraction form
    832.79/1,149.17 = 459.79/x
  3. Step 3: Cross multiply
    832.79x = 1,149.17 × 459.79
  4. Step 4: Simplify right side
    832.79x = 528,371.70
  5. Step 5: Solve for x
    x = 528,371.70/832.79
  6. Step 6: Final answer
    x = 634.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.